A thermo-hydro-mechanical model for energy piles under cyclic thermal loading

被引:24
|
作者
Arzanfudi, Mehdi M. [1 ]
Al-Khoury, Rafid [1 ]
Sluys, L. J. [1 ]
Schreppers, G. M. A. [2 ]
机构
[1] Delft Univ Technol, Fac Civil Engn & Geosci, POB 5048, NL-2600 GA Delft, Netherlands
[2] DIANA FEA BV, Thijsseweg 11, NL-2629 JA Delft, Netherlands
关键词
Energy pile modeling; THM model; Embedded finite element; Pile-soil interface; Geothermal heat exchanger; Multiphase mixture material; BEHAVIOR; ELEMENT; WATER; ICE;
D O I
10.1016/j.compgeo.2020.103560
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
This paper introduces a thermo-hydro-mechanical finite element model for energy piles subjected to cyclic thermal loading. We address four particular features pertaining to the physics of energy piles: three-dimensionality, embedded heat exchangers, soil constitutive modeling and pile-soil interface. The model is designed to capture the strong coupling between all important physical and thermomechanical processes occurring in a concrete pile embedding U-tubes heat exchangers and surrounded by a saturated soil mass. It encompasses solid and fluid compressibility, fluid and heat flow, thermoplastic deformation of soil, buoyancy, phase change, volume change, pore expansion, melting point depression, cryogenic suction and permeability reduction due to ice formation. The model is distinct from existing energy pile models in at least two features: (1) it can simulate the detailed convection-conduction heat flow in the heat exchanger and the associated unsymmetrical thermal interactions with concrete and soil mass; and (2) it can simulate cyclic freezing and thawing in the system and the associated changes in physical and mechanical properties of the soil mass that likely lead to thermoplasticity and deterioration of pile shaft resistance. The performance of the model is demonstrated through a numerical experiment addressing all its features.
引用
收藏
页数:18
相关论文
共 50 条
  • [31] Coupled thermo-hydro-mechanical model for porous materials under frost action: theory and implementation
    Liu, Zhen
    Yu, Xiong
    ACTA GEOTECHNICA, 2011, 6 (02) : 51 - 65
  • [32] A thermo-hydro-mechanical damage model for lined rock cavern for compressed air energy storage
    Wan, Fa
    Jiang, Zhongming
    Tian, Xiang
    Konietzky, Heinz
    Xiao, Zhezhen
    JOURNAL OF ENERGY STORAGE, 2024, 78
  • [33] A COUPLED THERMO-HYDRO-MECHANICAL MODEL FOR CAPTURING FROST HEAVE UNDER CHILLED GAS PIPELINES
    Na, SeonHong
    Kebria, Mahyar Malekzade
    Roy, Kshama
    PROCEEDINGS OF THE ASME 2020 13TH INTERNATIONAL PIPELINE CONFERENCE (IPC2020), VOL 2, 2020,
  • [34] A Coupled Thermo-Hydro-Mechanical Model of Jointed Hard Rock for Compressed Air Energy Storage
    Zhuang, Xiaoying
    Huang, Runqiu
    Liang, Chao
    Rabczuk, Timon
    MATHEMATICAL PROBLEMS IN ENGINEERING, 2014, 2014
  • [35] Coupled thermo-hydro-mechanical model for porous materials under frost action: theory and implementation
    Zhen Liu
    Xiong Yu
    Acta Geotechnica, 2011, 6 : 51 - 65
  • [36] Thermo-hydro-mechanical behaviour of compacted bentonite
    Tavallali, Abbass
    Tang, Anh-Minh
    Cui, Yu-Jun
    EXPERIMENTAL UNSATURATED SOIL MECHANICS, 2007, 112 : 259 - +
  • [37] Thermo-hydro-mechanical coupling in clay barriers
    Collin, F
    Li, XL
    Charlier, R
    Radu, JP
    POROMECHANICS: A TRIBUTE TO MAURICE A. BIOT, 1998, : 377 - 383
  • [38] A New Method for Predicting the Crack Propagation Process of Brittle Rock Under Thermo-Hydro-Mechanical Loading Conditions
    Yi, Wei
    Rao, Qiuhua
    Li, Zhuo
    Li, Charlie Chun-Lin
    IEEE ACCESS, 2021, 9 : 82888 - 82902
  • [39] Thermo-hydro-mechanical coupling in clay barriers
    Collin, F
    Li, XL
    Radu, JP
    Charlier, R
    ENGINEERING GEOLOGY, 2002, 64 (2-3) : 179 - 193
  • [40] Modelling process of thermo-hydro-mechanical coupling
    Dang Xu-guang
    Zhu Qing-jie
    Liu Feng
    Cheng Yu
    ROCK AND SOIL MECHANICS, 2009, 30 : 229 - 231